Report Scan List - iButtonLink LINK 12 User Manual

Report Scan List

Command " * " (asterisk)
Command Compatible With:
This command causes some LINK
this command is entered, the response is a single-character carriage return.
A bus scanning function is included in many LINK
departure of a new 1-Wire® device on a 1-Wire® bus. When turned ON using the " $ "
command, the scanning system continually performs "First" and "Next" device discovery
operations. It will build a table of device serial numbers, reporting up to eight (for LinkHub-S
and LinkHub-E) or 10 (for Link, LinkOEM, and LinkUSB) devices. The arrival will be reported
as a string with an exclamation point (!), a comma (,), and then the arriving device's serial
number. The departure will be reported as a question mark (?), followed by a comma (,), and
then the serial number of the device departed from the bus. This will make sure that the device is
actually gone by doing multiple reads.
Scanning is terminated by "Reset," "First," "Next," or a number of other operations.
Figure 18: The first two lines show the results of arrivals being scanned with
command " $ ". The next line is a line break, which was caused by command " * ".
Following the line break are the results of command " * ", which are the serial
numbers of the T-Probe
The scanning system will not work properly if more than eight (for LinkHub-E) or 10 (for
LinkUSB) 1-Wire® or iButton® devices are present on the bus. Exceeding these numbers will
extend the Link's memory capacity.
S C
IMILAR OMMANDS
• " $ " – Arrival/Departure Scanning
TM
devices to report a scan list. If scanning is not active when
!, 8000000202214928
!, 9A00000208AC5528
9A00000208AC5528
8000000202214928
:
The LINK™ Family Manual
Version 1.6 ©iButtonLink, LLC 2016
LinkHub-E | LinkUSB
TM
products to scan and report the arrival or
Page 44